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Contents

Index

• Getting Started

• Product Description

Key Features

What Does a Stateflow Chart Look Like?

How Stateflow Software Works with Simulink Software

Basic Tutorial for Modeling Event-Driven Systems

• Installing Stateflow Software

Installation Instructions

Prerequisite Software

Product Dependencies

Setting Up Your Own Target Compiler

Using Stateflow Software on a Laptop Computer

Related Products

The Stateflow Chart

How the Stateflow Chart Works with the Simulink Model

A Look at the Physical Plant

Running the Model

• Implementing the Interface with Simulink

Build It Yourself or Use the Supplied Model

Design Considerations for Defining the Interface

Adding a Stateflow Block to a Simulink Model

Defining the Inputs and Outputs

Connecting the Stateflow Block to the Simulink Subsystem

• Implementing the States to Represent Operating Modes

Build It Yourself or Use the Supplied Model

Design Considerations for Defining the States

Adding the Power On and Power Off States

Adding and Configuring Parallel States

Adding the On and Off States for the Fans

• Implementing State Actions

Build It Yourself or Use the Supplied Model

Design Considerations for Defining State Actions and Variables

Writing an Entry Action

Writing a During Action

• Adding the Transitions

Build It Yourself or Use the Supplied Model

Design Considerations for Defining Transitions Between States

Drawing the Transitions Between States

Adding Default Transitions

Adding Conditions to Guard Transitions

Adding Events to Guard Transitions

• Implementing the Triggers

Build It Yourself or Use the Supplied Model

Design Considerations for Triggering Stateflow Charts

Defining the CLOCK Event

Connecting the Edge-Triggered Events to the Input Signals

• Setting Simulation Parameters and Breakpoints

Prepare the Chart Yourself or Use the Supplied Model

Checking That Your Chart Conforms to Best Practices

Setting the Length of the Simulation

Configuring Animation for the Chart

Setting Breakpoints to Observe Chart Behavior

Simulating the Air Controller Chart

• Debugging Common Modeling Errors

Debugging State Inconsistencies

Debugging Data Range Violations

• User's Guide

• Stateflow Chart Concepts

• Stateflow Chart Notation

• Stateflow Chart Semantics

• Creating Stateflow Charts

• Modeling Logic Patterns and Iterative Loops Using Flow Graphs

• Building Mealy and Moore Charts

• Techniques for Streamlining Chart Design

• Defining Data

• Defining Events

• Using Actions in Stateflow Charts

• Making States Reusable with Atomic Subcharts

• Saving and Restoring Simulations with SimState

• Using Vectors and Matrices in Stateflow Charts

• Using Variable-Size Data in Stateflow Charts

• Using Enumerated Data in Stateflow Charts

• Modeling Continuous-Time Systems in Stateflow Charts

• Using Fixed-Point Data in Stateflow Charts

• Using Complex Data in Stateflow Charts

• Defining Interfaces to Simulink Models and the MATLAB Workspace

• Working with Structures and Bus Signals in Stateflow Charts

• Stateflow Design Patterns

• Truth Table Functions for Decision-Making Logic

• Using MATLAB Functions in Stateflow Charts

• Using Simulink Functions in Stateflow Charts

• Building Targets

• Targets You Can Build

Code Generation for Stateflow Charts and Truth Table Blocks

Software Requirements for Building Targets

• Choosing a Procedure to Simulate a Model

Guidelines for Simulation

Choosing the Right Procedure for Simulation

• Procedures for Simulation

Starting Simulation

Integrating Custom C++ Code for Simulation

Integrating Custom C Code for Nonlibrary Charts for Simulation

Integrating Custom C Code for Library Charts for Simulation

Integrating Custom C Code for All Charts for Simulation

• Speeding Up Simulation

Disable Simulation Target Options That Impact Execution Speed

Keep Charts Closed During Simulation

Keep Scope Blocks Closed During Simulation

Use Library Charts in Your Model

• Choosing a Procedure to Generate Embeddable Code for a Model

Guidelines for Embeddable Code Generation

Choosing the Right Procedure for Embeddable Code Generation

• Procedures for Embeddable Code Generation

Generating Code

Integrating Custom C++ Code for Code Generation

Integrating Custom C Code for Nonlibrary Charts for Code Generation

Integrating Custom C Code for Library Charts for Code Generation

Integrating Custom C Code for All Charts for Code Generation

• Optimizing Generated Code

How to Optimize Generated Code for Embeddable Targets

Design Tips for Optimizing Generated Code

• Using Command-Line API to Set Simulation and Code Generation Parameters

How to Set Parameters at the Command Line

Simulation Parameters for Nonlibrary Models

Simulation Parameters for Library Models

Code Generation Parameters for Nonlibrary Models

Code Generation Parameters for Library Models

• Specifying Relative Paths for Custom Code

Why Use Relative Paths?

Searching Relative Paths

Path Syntax Rules

Choosing a Compiler

• Examples of Integrating Custom C Code in Nonlibrary Models

Example of Using Custom C Code to Define Global Constants

Example of Using Custom C Code to Define Global Constants, Variables, and Functions

• How to Build a Stateflow Custom Target

When to Build a Custom Target

Adding a Stateflow Custom Target to Your Model

Configuring a Custom Target

Building a Custom Target

Restrictions on Building a Custom Target

What Happens During the Target Building Process?

• Parsing Stateflow Charts

How the Stateflow Parser Works

Calling the Stateflow Parser

Parser Error Checking

Parsing Chart Example

• Resolving Undefined Symbols in Your Chart

How to Check for Undefined Symbols

Using the Symbol Wizard to Define Chart Symbols

• Generated Code Files for Targets You Build

S-Function MEX-Files

Folder Structure of Generated Files

Code Files for a Simulation Target

Code Files for an Embeddable Target

Code Files for a Custom Target

Makefiles

• Traceability of Stateflow Objects in Generated Code

What Is Traceability?

Traceability Requirements

Traceable Stateflow Objects

When to Use Traceability

Basic Workflow for Using Traceability

Examples of Using Traceability

Format of Traceability Comments

• Controlling Inlining of State Functions in Generated Code

How Stateflow Software Inlines Generated Code for State Functions

How to Set the State Function Inline Option

Best Practices for Controlling State Function Inlining

• Debugging and Testing Stateflow Charts

• Exploring and Modifying Charts

• Semantic Rules Summary

• Semantic Examples

Glossary

• Using the API

• API Object Reference

• API Object Properties and Methods

API Method Reference

• Blocks

• Functions

Examples

• Release Notes

Building Targets

Scheduling Execution of Multiple Controllers

Targets You Can Build

Free Stateflow Interactive Kit

Learn how engineers use Stateflow to model state machines in their Simulink models.

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Trials Available

Try the latest version of Stateflow.

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